Re: [APD] KH.....testing PH after CO2 injection..

["S. Hieber" <shieber at yahoo_com>]

The addition of CO2 will not affect the level of carbonates
in the water, it will not affect the KH reading.

Anything that uses up carbonates will deplete them and
reduce the KH level, other things being equal.

Some plants can get carbon by using carbonates.  Val is
favorite example.  But I think this happens when other
methods of getting available.

Scott H.
--- Lorenzo Rota <lorenzo1961 at hotmail_com> wrote:
> Quick newbie question...
> 
> just set up tank using RO/DI water.....added RO Right to
> bring GH to 
> 3.....and added Kent PH Stable(nonphosphate) to bring KH
> to 4, resulting in 
> PH of 7.4.   Question is: After injecting CO2 to bring PH
> down to 6.8.....if 
> I measure KH again...will it still be 4??   Or does the
> CO2 influence KH 
> result?
> 
> Also..what processes occur that would lower KH in a
> planted tank?
> 
> 
> Thanks...
> 
> Lorenzo Rota
> 
>
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